Lesson Overview: In this unit, the students have been learning about forces and simple machines.  They “tuned in” using the work of Chris Van Dusen and a naughty bear after a bag of marshmallows.  Next, they took notes from a digital information source, then built and flew their own paper airplanes.  Today, they’ll use another … Continue reading Forces and Simple Machines #3: Mr. Ferris and His Wheel